1) Draw graph of function over the 2 period interval.
- y= 1-2/3 tan2(x-3pi/2)
- 2+3cosx
2) simplify ( 1+csc a)(1+csc(-a))
3) simplify cos theta - csc theta/ csc theta cos theta
4) Determine radian measure of the central angle theta in the circle of radius 4 cm if arc intercepts has length of 8 cm.